[Rails I18n] Globalize Currency Negative Value Error

I've got the Globalize-1.1 release installed and have been using the 
globalize plugin for a month or so now.  My base locale is en-US, Ruby 
1.8.4 (2005-12-24), Rails 1.1.2.  Here's the problem taken from 
./script/console:


Loading development environment.
 >> Globalize::Currency.new("-340")
=> #<Globalize::Currency:0x2337478 @cents=-340>
 >> Globalize::Currency.new("-340").to_s
=> "-4.60"
 >> Globalize::Currency.new("340").to_s
=> "3.40"
 >> Globalize::Currency.new("-340").to_s
=> "-4.60"

 >> Locale.set("en-US")
=> ...
 >> Globalize::Currency.new("-340").format
=> "-$4.60"
 >> Globalize::Currency.new("340").format
=> "$3.40"


Any insights and/or patches would be greatly appreciated.

Nate